1. The valve train employs a hydraulic-support roller rocker arm structure. Compared to the hydraulic tappet systems commonly found in standard gasoline engines, this innovative design offers lower frictional torque and requires less actuating force, thereby effectively reducing engine power loss and fuel consumption.
2. To effectively reduce the vehicle's overall weight, the 1.4-liter gasoline engine utilizes an aluminum alloy cylinder block, achieving significant weight reduction.
3. A plastic intake manifold-made from specialized materials and processed using advanced techniques-replaces the traditional metal version. This not only reduces weight but also minimizes airflow resistance along the manifold walls, improves intake efficiency, and boosts engine power output.
4. The engine uses fracture-split connecting rods manufactured via advanced processes. Specialized equipment is used to fracture-split the big-end bore rather than using traditional sawing and grinding methods. The resulting jagged mating surfaces ensure precise positioning and fastening, which reduces friction and extends the connecting rod's service life.
5. A shrink-fit camshaft is employed; compared to conventional camshafts, this design reduces weight while achieving superior cam profile accuracy and more precise valve timing.
6. An electronic throttle control system (known as E-GAS) is used. This system coordinates and manages the engine's instantaneous torque and power output requirements across various operating conditions-such as acceleration, overtaking, or air conditioning activation. It ensures the engine operates within the optimal range for every condition, meeting low-emission and low-fuel-consumption standards while optimizing overall vehicle driving performance.
7. The layout of the engine intake system has been improved to lower intake air temperature and increase air density. By enhancing volumetric efficiency, the engine can deliver higher power output. Specifically, the intake ducting is positioned on the left side of the front-end module, directly above the radiator. 8. To enhance corrosion resistance and extend the service life of the cooling tank, the radiator fins located in the engine front-end module are encased in plastic.
9. To prevent damage to the engine caused by the oil sump striking or scraping against uneven road surfaces, an optional metal skid plate can be installed beneath the sump.
10. To effectively insulate against heat, noise, and vibration-preventing them from entering the passenger cabin and compromising ride comfort-a heat shield has been installed near the exhaust pipe on the POLO.
